Electric locomotive truck



W 15, A. WALLACE 1,75'637-4 I ELECTRIC LOCCMOTIVE TRUCK Filed Oct. '7,1929 2 Sheets-Sheet 1 vii/9;

Sept. 16, 1930,

A. WALLACE L'FWJ'M ELECTRIC LOCOMOTIVE TRUCK Filed Oct. '7, 1929 2Sheets-Sheet 2 fiweroz a k J$7WW P tented Sept. 16, 1930 ALLEN WALLACE,OF MOOBESTOWN, NEW JERSEY ELECTRIC LOCOMOTIVE raucx' npplioatlon filedOctober 7, 1929. Serial H 0. 898,084.

My invention relates to certain improvements in railway trucks which areespecially adapted for use in connection with electric locomotives, butit will be understood that the invention can be used under rolling stockof any type.

he object of my invention is to combine a semi-elliptical spring with aseries of coil springs, the semi-elliptical spring at each side of thetruck being suspended from the equalizing beams.

A further object of the invention is to so design the truck that thecoil springs will be located'in a housing formed integral with the frameof the truck.

In the accom anying drawing:

Fig. 1 is a si e view of my improved electric locomotive truck;

Fig. 2 is a plan view; and

3 is a sectional view on the line 3-3,

1 is the frame of the truck, having side members. The frame may be madeas an integral casting. Formed on the side members 2 of the frame arethe pedestals 2, for the boxes 3, for the axles 4, on which are thewheels 5.

Extending longitudinally on each side of each side member of the frameof the truck are equalizing beams 6. These beams rest at each end uponthe boxes 3. The beams are shown curved inthe present instance but theymay be made in other shapes without departing from the main features ofthe invention. uspended from the equalizin beams 6, at each side of thetruck by links is a semielliptical spring 8, having the band 9 at thecenter in t is instance, although its location mag be variedlongitudinally.

esting on the spring is a spring late 10, which is -guided at its upperend in t e housing in the frame 1. In this housin are a series of ockets11 and in each poc et is a coiled spring 12, which rests upon the springplate 10, so that the frame is carried by the equalizing beams throughthe semi-elliptical spring 8, spring plate 10 and the seriesof coilsprings 12, at each side of the truck.

Projecting vertically from each side of the truck are platforms 13 inthe present instance, on which are bearings 14', carrying rollers 15,

members and a cross which form the side bearings for the truck.Thegeside bearings may be modified if desire Y The center bearing 16 issecured to the cross beam 17, which in the present instance is formedintegral with the truck frame. This cross beam is sha ed to su port theoverhanging portions of t e electrlc' motors which are carried by theaxles. v

Depen 'ng from each end of the cross beam are brackets 18 on which areadjustably mounted plates 19, which act as buifer plates for theequalizing beams 66 and also help to hold the brake-shoes in adjustment.

It will be seen by the above construction that my improved truck isdesigned to carry heavy weights, such as the body of an electriclocomotive, as the weight is carried by the two sets of equalizing beamsthrough the medium of the semi-elliptical sprin of coils rings and itwill beun erstood that the num er of coil springs will vary according tothe amount of load to be carried.

I claim:

1. The combination in a truck, of a frame; 7 axle boxes mounted in theframe; equalizing beams on each side of the truck resting upon theboxes; semi-elliptical s rings suspended from the said equalizin ams; aspring plate on each semi-elliptical spring; and a so series of coilsprings above the semi-elliptlcal springs and located between the springplate and the frameofthe truck.

2. The combination in a truck, of a frame having edestals'formedthereon; axle boxes mounts in the pedestals; equalizing beams restingupon the boxes; semihptlcal springs at each side of the truck, suspendedfrom the equalizing beams;-a spring plate mounted on the semi-ellipticalspring, the frame of the truck having a series of ockets; and coilspringslocated in the poo ets and resting upon the spring plate.

3. The combination in an electric locomotive truck, of an int al framehaving sides am and having pedestals formed integral'therewith; a centerplate mounted on the cross beam; 8. air of equalizing beams located ateach si e of the truck, one beam of each pair resting upon the axle andseries 7 boxes on the outside of the side member of the frame, the otherbeam resting upon the boxes at the inner side of the side member of theframe; a semielliptical spring located between the two beams; linkssuspending the spring from the beams; a spring plate mounted on thesemi-elliptical sprin and guided by the frame; and a series of coisprings restin'g upon the s ring plate, said springs being located inpoc ets formed integral with the frame of the truck.

4. The combinatipn in a car truck, of a frame having pedestals; boxesmounted be- 7 tween the pedestals; equalizing beams extendinglongitudinally to the frame and resting upon the boxes; 9.semi-ellipticalspring suspended from the beamsat each side of the truck;coil springs carried between two longitudinal springs and located in thehousing of the frame; a cross beam. formed inte a1 wit-h'the frame ofthe truck; brackets en ing from the cross beam; and secured to thebrackets, actlng as bufiers for the longitudinal equalizing beams. ALLENWALLACE.

plates ad ustably

